The actors first met on the set of Tropic Thunder back in 2007, when Jennifer visited the set. She was introduced to Justin by their mutual friend, Ben Stiller.

Jennifer told PopSugar that although she thought he was very sweet, he seemed very dark.

"At first you think he could be like a serial killer, but he is actually the nicest person in the world," she said

2010

The two reconnected and really got to know each other when they co-starred in the movie Wanderlust.

Nothing happened at that time since Justin was in a long-term relationship with stylist Heidi Bivens, whom he'd been dating for 14 years.

2011

At this point rumours started swirling around about them dating but nothing was confirmed as yet. However, once they showed up at the 2011 MTV Movie Awards after-party and were photographed together, it was official!

According to ET, soon after their semi-public appearance, news broke that Justin had moved in with the Friends star.

2012

The couple took their relationship to the next level when they adopted a puppy together and named it Sophie.